Computation of optimum reliability acceptance sampling plans in presence of hybrid censoring

The decision regarding acceptance or rejection of a lot of products may be considered through variables acceptance sampling plans based on suitable quality characteristics. A variables sampling plan to determine the acceptability of a lot of products based on the lifetime of the products is called reliability acceptance sampling plan (RASP). This work considers the determination of optimum RASP under cost constraint in the framework of hybrid censoring. Weibull lifetime models are considered for illustrations; however, the proposed methodology can be easily extended to any location-scale family of distributions. The proposed method is based on asymptotic results of the estimators of parameters of lifetime distribution. Hence, a Monte Carlo simulation study is conducted in order to show that the sampling plans meet the specified risks for finite sample size.     

Paint Mesh Cutting

We present a novel progressive painting‐based mesh cut out tool, called Paint Mesh Cutting, for interactive mesh segmentation. Different from the previous user interfaces, the user only needs to draw a single stroke on the foreground region and then obtains the desired cutting part at an interactive rate. Moreover, the user progressively paints the region of interest using a brush and has the instant feedback on cutting results as he/she drags the mouse. This is achieved by efficient local graph‐cut based optimizations based on the Gaussian mixture models (GMM) on the shape diameter function (SDF) metric of the shape. We demonstrate a number of various examples to illustrate the flexibility and applicability of our system and present a user study that supports the advantages of our user interface.     

105g压阻式加速度微传感器实时自补偿技术的研究

针对测试10^5g压阻式加速度微传感器的温度补偿问题，本文从温度补偿的基本原理出发，通过推理和演绎，得出温度补偿公式。提出用软件编程和DSP的方法对传感器进行温度补偿，实现了传感器温度补偿的实时性和智能化。并提供了相应的实验数据，证明所提出的实时自补偿方法是切实可行的。     

LLM-105重结晶与性能研究

研究了LLM-105的重结晶方法。结果表明,不同重结晶方法获得的LLM-105平均粒径、纯度和撞击感度差别较大,其中冷却法和溶剂(DMSO)-非溶剂(热水)法结晶产品撞击感度较低,H50值分别为120.0cm和108.3cm。采用DSC?TG、VST、TG和热爆炸等方法研究了LLM-105的热性能,DSC放热起始温度为341.2℃(升温速率10℃.min-1),120℃条件下48h放气量为0.016mL.g-1,120℃条件下48h热失重为0.13%,5s延滞期爆发点为367.6℃;VST测试结果表明,LLM-105与HMX、AS、F2311、F2314、Estane的相容性良好。测定LLM-105爆速(LLM-105/F2314=95/5,1.845g.cm-3,96.4%TMD)为7991m.s-1。压力-密度测试结果表明,LLM-105具有良好的压缩成型性能。     

Regulation and Release of Vasoactive Endoglin by Brain Endothelium in Response to Hypoxia/Reoxygenation in Stroke

In large vessel occlusion stroke, recanalization to restore cerebral perfusion is essential but not necessarily sufficient for a favorable outcome. Paradoxically, in some patients, reperfusion carries the risk of increased tissue damage and cerebral hemorrhage. Experimental and clinical data suggest that endothelial cells, representing the interface for detrimental platelet and leukocyte responses, likely play a crucial role in the phenomenon referred to as ischemia/reperfusion (I/R)-injury, but the mechanisms are unknown. We aimed to determine the role of endoglin in cerebral I/R-injury; endoglin is a membrane-bound protein abundantly expressed by endothelial cells that has previously been shown to be involved in the maintenance of vascular homeostasis. We investigated the expression of membranous endoglin (using Western blotting and RT-PCR) and the generation of soluble endoglin (using an enzyme-linked immunosorbent assay of cell culture supernatants) after hypoxia and subsequent reoxygenation in human non-immortalized brain endothelial cells. To validate these in vitro data, we additionally examined endoglin expression in an intraluminal monofilament model of permanent and transient middle cerebral artery occlusion in mice. Subsequently, the effects of recombinant human soluble endoglin were assessed by label-free impedance-based measurement of endothelial monolayer integrity (using the xCELLigence DP system) and immunocytochemistry. Endoglin expression is highly inducible by hypoxia in human brain endothelial monolayers in vitro, and subsequent reoxygenation induced its shedding. These findings were corroborated in mice during MCAO; an upregulation of endoglin was displayed in the infarcted hemispheres under occlusion, whereas endoglin expression was significantly diminished after transient MCAO, which is indicative of shedding. Of note is the finding that soluble endoglin induced an inflammatory phenotype in endothelial monolayers. The treatment of HBMEC with endoglin resulted in a decrease in transendothelial resistance and the downregulation of VE-cadherin. Our data establish a novel mechanism in which hypoxia triggers the initial endothelial upregulation of endoglin and subsequent reoxygenation triggers its release as a vasoactive mediator that, when rinsed into adjacent vascular beds after recanalization, can contribute to cerebral reperfusion injury.     

天津污水处理厂曝气池(105)设备安装技术措施

以实际工程为例,详细叙述了污水处理厂曝气池(105)设备安装施工技术措施.     

塔河油田S105井承压堵漏技术

塔河油田S105井三开长裸眼井段钻遇长达255m的盐膏层，而且地层压力上低下高，为此，在钻至井深5100m时，应用承压堵漏技术对5100m以浅的裸眼段进行先期堵漏，使地层承压能力大大提高，整个盐膏层钻井过程顺利．仅漏失约20m。钻井液。详细介绍了该井承压堵漏的施工情况。     

加速度传感器ADXL105的原理及实验研究

ADXL105是ANALOG公司生产的加速度传感器芯片。该芯片除包含一个多晶硅表面微处理传感器外,还内置一个运算放大器,便于对测量信号进行处理,满量程是5g。详细介绍了ADXL105的工作原理、功能、特性,设计了测量探头、滤波电路、减法电路等具体实验电路并进行了相关实验研究,提出了注意事项,并对实验中出现的问题进行了讨论。实验结果表明,ADXL105能够很好地测量静态和动态加速度,响应速度快,性能稳定,适用于机械振动测量等场合。     

细颗粒LLM-105的制备及粒度控制技术研究

采用溶剂-非溶剂重结晶法制备了粒度D505μm的LLM-105颗粒,并对影响粒度的加料方式、非溶剂温度、溶剂量、搅拌速度、表面活性剂以及干燥方式等工艺条件进行研究,得到制备细颗粒LLM-105(D505μm)的工艺参数为:反式滴加法,非溶剂H_2O温度小于35℃,mLLM-105∶VDMSO≤1g∶15m L。     

基于AD9851的受控正弦信号发生器设计

以TI公司超低功耗单片机（MSP430F420）,电流变送器（XTR105PA）,电流接收器（RCV420KP）及DDS芯片AD9851为主要器件,设计二线式电流型电阻变送器控制的正弦信号发生器,变送器可变电阻阻值范围为1 000～2 000Ω,对应输出频率为1 000～2 000kHz的正弦信号,可用示波器显示,阻值由LED显示。